JPH0324168U

JPH0324168U -

Info

Publication number: JPH0324168U
Application number: JP1989082827U
Authority: JP
Priority date: 1989-07-14
Filing date: 1989-07-14
Publication date: 1991-03-13

Description

[Brief explanation of drawings]

第１図は本考案の野球用バツトの概略斜視図、
第２図は第１図のＡ−Ａ断面の拡大図、第３図は
有機繊維の配向説明図、第４図は高引張弾性率を
有する繊維の配向説明図を示す。１……金属製素管、２……繊維強化樹脂層、３
……介在層。 FIG. 1 is a schematic perspective view of the baseball bat of the present invention;
FIG. 2 is an enlarged view of the AA cross section in FIG. 1, FIG. 3 is an explanatory diagram of the orientation of organic fibers, and FIG. 4 is an explanatory diagram of the orientation of fibers having a high tensile modulus. 1...Metal raw pipe, 2...Fiber reinforced resin layer, 3
...intervening layer.

補正平２．１０．１５実用新案登録請求の範囲を次のように補正する
。Amendment October 15, 2002 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】 (1) 金属製素管の内周面に繊維強化樹脂層を設
けてなる野球用バツトにおいて、該強化繊維が２
方向以上に交差するように配向されるとともに、
該強化繊維の一部は有機繊維又は有機繊維を含む
繊維からなり、かつ該素管の長手方向に対して０
±２０度の角度に配向されていることを特徴とす
る野球用バツト。 (2) 該繊維強化樹脂層が、打球対応部に設けら
れている請求項１の野球用バツト。 (3) 該強化繊維の一部が引張弾性率が２０トン
／mm^２以上の繊維からなり、かつ該素管の長手方
向に対して９０±２０度の角度に配向されている
請求項１又は２の野球用バツト。 (4) 該湯有機繊維が、アラミド繊維である請求
項１〜３のいずれかの野球用バツト。 (5) 該素管と繊維強化樹脂層との間に、体積固
有抵抗が１０^１０Ω・cm以上の材料からなる層を
介在させてなる請求項１〜４のいずれかの野球用
バツト。[Claims for Utility Model Registration] (1) A baseball bat comprising a fiber-reinforced resin layer provided on the inner peripheral surface of a metal pipe, in which the reinforcing fibers are
It is oriented to intersect more than the direction, and
A part of the reinforcing fibers are made of organic fibers or fibers containing organic fibers, and have a zero width in the longitudinal direction of the raw pipe.
A baseball bat characterized by being oriented at an angle of ±20 degrees. (2) The baseball bat according to claim 1, wherein the fiber-reinforced resin layer is provided in the ball-hitting portion. (3) Some of the reinforcing fibers are made of fibers having a tensile modulus of 20 tons/mm ² or more, and are oriented at an angle of 90±20 degrees with respect to the longitudinal direction of the raw pipe. 2 baseball bat. (4) The baseball bat according to any one of claims 1 to 3, wherein the organic fiber is an aramid fiber. (5) The baseball bat according to any one of claims 1 to 4, wherein a layer made of a material having a volume resistivity of 10 ¹⁰ Ω·cm or more is interposed between the raw pipe and the fiber-reinforced resin layer.

Claims

[Claims for Utility Model Registration] (1) A baseball bat comprising a fiber-reinforced resin layer provided on the inner peripheral surface of a metal pipe, in which the reinforcing fibers are
It is oriented to intersect more than the direction, and
A part of the reinforcing fibers are made of organic fibers or fibers containing organic fibers, and have a zero width in the longitudinal direction of the raw pipe.
A baseball bat characterized by being oriented at an angle of ±20 degrees. (2) The baseball bat according to claim 1, wherein the fiber-reinforced resin layer is provided in the ball-hitting portion. (3) Some of the reinforcing fibers are made of fibers having a tensile modulus of 20 tons/mm ² or more, and are oriented at an angle of 90±20 degrees with respect to the longitudinal direction of the raw pipe. 2 baseball bat. (4) The baseball bat according to any one of claims 1 to 3, wherein the organic fiber is an aramid fiber. (5) The baseball bat according to any one of claims 1 to 4, wherein a layer made of a material having a volume resistivity of 10 ¹⁰ cm or more is interposed between the raw pipe and the fiber-reinforced resin layer.